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What are the reasons for the high content of benzene in the poor solvent, and how should it be adjusted?

2019-03-12View Original

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In my benzene extraction unit, the gas-to-water ratio is around 1300; the temperature in the solvent recovery tower is approximately 172 degrees, with a top pressure of -40 KPa. Recently, the concentration of benzene in the lean solvent has been quite high, reaching up to 8000 PPm, while it is usually around 5000 PPm. I would appreciate some advice from experts.

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